Alert archive / Dense Fog Advisories / 2017
Dense Fog Advisories in the United States, August 2017
99 dense fog advisories in August 2017. Each alert counts once, however many counties it covered. The archive of dense fog advisories reaches back to 2005.
Dense Fog Advisories by state
Each state shaded by its count. Tap a state for its own archive.
- Dense Fog Advisories
- 99
- Busiest day
- August 30, 201712 dense fog advisories
Over time
By day
Days in UTC, the clock the archive keeps.
By state
Every state and territory, with the alerts that covered any part of it. Each state’s page lists every one of them.
- Texas178
- Florida158
- Alabama119
- Mississippi117
- Kansas111
- Georgia109
- Missouri98
- Illinois93
- Minnesota89
- Louisiana85
- Iowa79
- California75
- Indiana69
- Nebraska67
- Arkansas66
- Wisconsin65
- Tennessee64
- South Carolina52
- Colorado51
- North Carolina49
- Kentucky49
- Ohio43
- Oregon41
- North Dakota41
- Maine41
- Michigan41
- Alaska37
- Oklahoma33
- Massachusetts32
- Rhode Island27
- South Dakota26
- Pennsylvania25
- Wyoming25
- Montana24
- New York21
- Virginia20
- New Hampshire19
- Connecticut19
- Maryland17
- Idaho17
Nearby
Alerts in force nowThe tornado archiveThe radar archive20162018
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.